<!DOCTYPE html>
<html>
<head>
  <style>
    #root{
      height: 100px;
      width: 100px;
      background-color: gray;
    }
  </style>
  <title>react-css perf tests</title>
</head>
<body>
  <div id='root'></div>
  <script src='bundle.js'></script>
</body>
</html>